var express = require('express');
var router = express.Router();
var formidable = require('formidable');
var fs = require('fs');

var TITLE='formidable上传';
var AVATAR_UPLOAD_FOLDER = '/images/'

/* GET home page. */
router.get('/', function(req, res, next) {
    res.render('file',{title:TITLE});
});
router.post('/',function(req,res){
    var form=new formidable.IncomingForm();//创建上传表单
    form.encoding='utf-8';
    form.uploadDir = './public/images/' 	 //设置上传目录
    form.keepExtensions = true;	 //保留后缀
    form.maxFieldsSize = 1024 * 1024 * 1024;   //文件大小

    form.parse(req,function(err,fields,files){
        if(err){
            res.locals.error=err;
            res.render('index',{title:TITLE});
            return;
        }
        var extName='';
        switch (files.fulAvatar.type) {
            case 'image/pjpeg':
                extName = 'jpg';
                break;
            case 'image/jpeg':
                extName = 'jpg';
                break;
            case 'image/png':
                extName = 'png';
                break;
            case 'image/x-png':
                extName = 'png';
                break;
        }
        if(extName.length == 0){
            res.locals.error = '只支持png和jpg格式图片';
            res.render('index', { title: TITLE });
            return;
        }
        var avatarName = Math.random()*100 + '.' + extName;
        var newPath = form.uploadDir + avatarName;

        console.log(newPath);
        fs.renameSync(files.fulAvatar.path, newPath);  //重命名
    })
    res.locals.success = '上传成功';
    res.render('file', { title: TITLE });
})
module.exports = router;
